Nov 3: A team of scientists is reporting a high rate of reproductive failure in dolphins exposed to oil from the Deepwater Horizon spill. The team has monitored these bottlenose dolphins in heavily-oiled Barataria Bay for five years following the spill.

May 21: A tissue study finds that the Deepwater Horizon oil spill contributed to a high number of Gulf dolphin deaths. The study finds petroleum contaminants the likely source of lung and adrenal lesions causing deaths.

Mar 10: Researchers have identified more than 100 areas within U.S. waters that should be considered biologically important when making management and regulatory decisions about human activities that could affect whales, dolphins and porpoises.

Feb 11: A new study has found four distinct groupings of dolphin deaths within the Northern Gulf of Mexico Unusual Mortality Event (UME). Three of the groupings followed the 2010 Deepwater Horizon oil spill.

Sep 19: NOAA Fisheries announced the award of 35 grants to partner organizations in 18 states totaling $2.7 million to respond to and rehabilitate stranded marine mammals and collect data on their health.